The artist Christo is pushing back the time frame for his Over the River project, which would involve suspending 5.9 miles worth of silvery, translucent fabric over specific sections of a 42-mile stretch of the Arkansas River.

The artist Christo wants to stretch fabric over the Arkansas River as part of a massive art exhibition. But now a group of University of Denver law students are joining in on the fight to put a stop to it before it ever starts.

Artist Christo’s plan to suspend huge fabric panels over parts of the heavily rafted Arkansas River in Colorado is largely intact under a version federal land managers identified Thursday as the preferred alternative for the project.